Clear Outside v1.0 - International Weather Forecasts For Astronomers

Wednesday 17

Waning Crescent 20%

02:10

18:00

09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad

Sun - Rise: 06:40, Set: 19:09, Transit: 12:54. Moon - Rise: 02:10, Set: 18:00. Civil Dark: 19:44 - 06:05. Nautical Dark: 20:25 - 05:24. Astro Dark: 21:09 - 04:41

Total Clouds (% Sky Obscured)

100
100
100
100
100
100
100
87
89
80
100
100
100
81
64
69
64
67
73
78
89
95
93
93

Low Clouds (% Sky Obscured)

94
90
86
80
100
100
100
70
61
75
50
41
49
57
62
69
64
55
70
76
77
79
89
86

Medium Clouds (% Sky Obscured)

38
100
43
41
73
17
9
14
15
4
10
21
4
4
3
32
3
28
3
3
23
40
71
31

High Clouds (% Sky Obscured)

0
6
2
0
2
3
0
0
0
20
46
100
55
71
13
3
3
43
71
65
60
65
48
38

ISS Passover

Visibility (miles)

4
3
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

Light Rain
Light Rain
Light Rain
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

95
91
64
54
18
5
3
3
3
3
2
22
18
5
1
0
0
0
1
2
0
12
7
27

Precipitation Amount (mm)

1
0.8
0.4
0.3
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

12
13
14
14
17
17
17
17
16
15
15
15
14
13
13
12
12
11
10
9
8
7
8
11

Chance of Frost

Temperature (°C)

12
13
14
15
16
17
17
18
18
18
18
18
18
17
17
16
16
15
15
14
14
15
16
17

Feels Like (°C)

9
9
10
11
13
13
14
14
15
15
15
15
15
15
14
15
14
15
13
13
13
14
15
15

Dew Point (°C)

12
12
12
13
14
15
15
16
16
16
16
16
16
15
15
14
14
14
13
13
14
14
15
16

Relative Humidity (%)

96
95
90
90
89
87
89
89
89
89
90
88
89
88
87
87
87
89
90
93
95
95
98
95

Pressure (mb)

1014
1013
1013
1012
1012
1012
1012
1012
1012
1012
1012
1013
1013
1014
1014
1014
1015
1015
1015
1015
1015
1015
1015
1015

Ozone (du)

260
260
261
261
262
265
266
267
267
263
264
263
262
261
259
258
258
257
259
259
260
261
261
262

Thursday 18

Waning Crescent 12%

03:34

18:17

09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad

Sun - Rise: 06:42, Set: 19:07, Transit: 12:53. Moon - Rise: 03:34, Set: 18:17. Civil Dark: 19:41 - 06:07. Nautical Dark: 20:23 - 05:26. Astro Dark: 21:06 - 04:43

Total Clouds (% Sky Obscured)

100
94
94
82
74
61
74
64
80
76
100
91
93
92
100
97
65
79
75
70
100
100
100
100

Low Clouds (% Sky Obscured)

83
82
80
72
46
32
37
27
58
69
35
43
40
39
57
46
47
45
49
53
54
63
64
71

Medium Clouds (% Sky Obscured)

66
35
61
9
14
0
17
1
20
0
37
77
53
45
89
71
8
46
3
2
2
3
25
14

High Clouds (% Sky Obscured)

72
82
75
68
53
61
67
64
55
50
100
68
48
40
80
38
37
56
45
36
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

14
5
2
2
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

14
17
18
18
18
19
19
18
18
17
15
13
14
13
12
11
11
11
11
11
11
11
11
10

Chance of Frost

Temperature (°C)

18
18
19
20
21
22
22
22
22
21
20
20
19
18
18
17
17
16
16
16
15
15
15
16

Feels Like (°C)

15
15
16
17
18
18
19
19
19
18
17
17
17
16
16
16
15
15
15
15
15
13
13
14

Dew Point (°C)

16
16
17
17
17
17
17
16
16
15
15
16
15
16
16
16
16
15
15
14
14
14
14
14

Relative Humidity (%)

92
88
85
82
79
74
74
72
68
68
72
77
80
83
86
90
95
93
93
92
93
95
95
89

Pressure (mb)

1015
1015
1015
1015
1015
1015
1015
1015
1015
1016
1016
1016
1017
1017
1017
1018
1018
1018
1017
1017
1017
1017
1017
1017

Ozone (du)

261
261
261
260
258
257
257
258
260
261
261
261
262
260
258
257
257
257
258
258
259
258
259
259

Friday 19

Waning Crescent 6%

04:54

18:29

09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 OK
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 OK
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad

Sun - Rise: 06:43, Set: 19:05, Transit: 12:53. Moon - Rise: 04:54, Set: 18:29. Civil Dark: 19:39 - 06:09. Nautical Dark: 20:20 - 05:28. Astro Dark: 21:03 - 04:45

Total Clouds (% Sky Obscured)

100
81
93
82
67
62
71
70
41
71
78
76
72
96
96
94
100
45
59
87
100
100
100
100

Low Clouds (% Sky Obscured)

62
34
41
33
40
46
43
28
8
0
0
19
25
33
21
19
21
37
33
31
35
45
48
55

Medium Clouds (% Sky Obscured)

10
2
2
0
0
0
0
0
3
3
3
0
0
3
0
5
7
2
0
20
44
63
79
49

High Clouds (% Sky Obscured)

99
68
72
68
63
56
69
70
33
38
53
50
43
94
95
83
100
9
53
79
100
100
100
100

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

12
13
13
14
15
15
15
13
11
9
7
7
7
7
6
7
6
7
6
6
6
5
5
6

Chance of Frost

Temperature (°C)

17
18
20
22
23
24
24
24
23
22
20
19
18
17
17
16
16
16
15
15
14
14
14
15

Feels Like (°C)

15
16
18
19
20
20
20
21
22
22
21
19
18
18
16
15
16
15
17
15
14
14
14
15

Dew Point (°C)

14
14
14
13
13
13
12
13
13
13
13
12
12
12
12
12
13
12
13
13
12
12
12
13

Relative Humidity (%)

83
77
69
59
53
50
47
49
50
55
62
65
69
70
73
77
79
80
85
86
87
87
87
85

Pressure (mb)

1017
1017
1017
1016
1015
1015
1014
1014
1013
1013
1014
1014
1014
1014
1013
1013
1012
1012
1011
1011
1010
1010
1009
1009

Ozone (du)

259
257
257
257
256
257
257
257
258
258
258
259
260
260
260
261
262
263
264
264
267
267
266
266

Saturday 20

Waning Crescent 2%

06:11

18:38

09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Good
22 Bad
23 Bad
00 Bad
01 OK
02 OK
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad

Sun - Rise: 06:45, Set: 19:02, Transit: 12:53. Moon - Rise: 06:11, Set: 18:38. Civil Dark: 19:37 - 06:11. Nautical Dark: 20:18 - 05:30. Astro Dark: 21:01 - 04:47

Total Clouds (% Sky Obscured)

100
100
100
100
89
86
88
84
78
69
59
54
5
54
71
83
40
38
72
86
93
98
97
96

Low Clouds (% Sky Obscured)

58
61
65
68
65
65
62
50
24
22
0
0
0
15
30
48
40
38
50
64
78
91
86
81

Medium Clouds (% Sky Obscured)

44
45
99
100
74
74
28
80
24
22
11
6
0
6
12
18
15
14
11
15
23
31
60
82

High Clouds (% Sky Obscured)

100
100
100
100
54
30
15
10
5
10
15
20
3
25
25
39
2
2
0
0
0
0
0
0

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
6
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
Very Light Rain
None
None
Light Rain
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

0
0
2
2
15
23
34
43
66
77
73
78
2
3
2
1
5
5
15
27
35
43
40
46

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0.2
0
0
0.4
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

8
9
10
12
14
15
16
16
18
18
19
17
16
15
14
11
10
10
10
9
7
6
7
10

Chance of Frost

Temperature (°C)

16
17
19
19
20
21
22
22
20
17
14
14
13
12
12
12
11
11
10
10
10
10
10
10

Feels Like (°C)

15
16
16
16
16
17
18
17
14
12
9
8
7
7
6
6
6
6
6
5
6
7
5
5

Dew Point (°C)

12
12
11
10
10
10
10
10
11
12
9
8
8
7
6
7
6
6
6
6
7
7
7
7

Relative Humidity (%)

77
68
59
54
51
47
47
47
56
73
69
68
71
70
68
72
72
71
73
74
81
83
80
78

Pressure (mb)

1009
1008
1007
1007
1006
1005
1004
1003
1003
1004
1005
1005
1006
1007
1007
1007
1007
1007
1007
1008
1008
1009
1010
1011

Ozone (du)

266
266
265
265
265
266
267
268
270
276
280
282
283
287
290
293
296
296
296
296
297
298
298
301

Sunday 21

New Moon 0%

07:26

18:47

09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad

Sun - Rise: 06:47, Set: 19:00, Transit: 12:52. Moon - Rise: 07:26, Set: 18:47. Civil Dark: 19:34 - 06:12. Nautical Dark: 20:15 - 05:32. Astro Dark: 20:58 - 04:49

Total Clouds (% Sky Obscured)

95
96
97
99
100
100
100
90
100
100
93
76
54
54
56
69
70
69
66
62
64
66
62
58

Low Clouds (% Sky Obscured)

75
81
87
93
93
93
90
84
79
76
68
55
42
38
31
25
37
49
61
60
60
59
57
56

Medium Clouds (% Sky Obscured)

85
90
94
99
99
100
100
74
100
91
41
39
33
38
43
46
30
15
0
2
4
5
3
1

High Clouds (% Sky Obscured)

0
0
0
0
0
0
0
16
68
79
65
33
7
5
3
2
1
1
0
0
0
0
0
0

ISS Passover

Visibility (miles)

7
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
Very Light Rain
None
None
None
None
None
Very Light Rain
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

50
56
65
65
65
62
49
61
60
49
52
45
32
34
29
5
10
8
4
21
14
7
17
10

Precipitation Amount (mm)

0
0
0.3
0
0
0
0
0
0.2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

11
13
13
15
17
19
18
19
17
16
13
13
13
13
12
11
11
11
11
11
11
11
11
13

Chance of Frost

Temperature (°C)

11
12
12
12
12
13
13
12
12
11
11
10
10
9
9
9
9
9
9
8
9
9
9
10

Feels Like (°C)

6
7
7
7
7
6
6
6
6
6
5
5
5
5
6
6
6
6
6
6
6
7
6
6

Dew Point (°C)

8
8
7
6
6
5
4
4
5
5
3
3
4
4
5
5
4
5
5
5
6
6
6
6

Relative Humidity (%)

79
76
69
67
63
57
57
56
61
64
60
62
66
72
76
74
73
75
78
81
82
82
82
74

Pressure (mb)

1012
1013
1014
1014
1015
1016
1016
1017
1018
1019
1019
1020
1021
1021
1022
1022
1023
1023
1023
1024
1024
1025
1025
1026

Ozone (du)

303
306
308
312
312
313
311
310
309
309
310
312
314
316
319
322
322
320
318
316
316
316
316
316

Monday 22

Waxing Crescent 1%

08:40

18:55

09 Bad
10 Bad
11 Bad
12 OK
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 OK
21 OK
22 OK
23 OK
00 OK
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad
07 Bad
08 Bad

Sun - Rise: 06:49, Set: 18:57, Transit: 12:52. Moon - Rise: 08:40, Set: 18:55. Civil Dark: 19:32 - 06:14. Nautical Dark: 20:12 - 05:34. Astro Dark: 20:55 - 04:51

Total Clouds (% Sky Obscured)

54
51
48
42
45
51
59
57
54
51
47
45
43
40
41
45
54
67
78
69
56
53
50
47

Low Clouds (% Sky Obscured)

54
51
46
40
44
45
49
50
46
45
45
43
39
40
41
42
47
52
58
63
56
53
50
47

Medium Clouds (% Sky Obscured)

0
0
0
0
2
3
6
4
2
0
0
1
1
1
0
0
0
0
0
4
8
14
17
35

High Clouds (% Sky Obscured)

0
0
0
0
2
4
4
4
5
6
4
2
1
2
5
7
8
10
14
9
5
1
25
36

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

3
4
3
1
7
2
1
2
1
0
7
2
0
3
3
2
9
10
5
13
13
12
10
7

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

15
16
16
16
16
16
16
16
14
12
10
9
8
8
8
7
7
7
8
8
8
8
8
10

Chance of Frost

Temperature (°C)

11
12
13
14
14
14
14
14
13
13
12
11
10
9
10
10
10
10
9
9
9
10
10
11

Feels Like (°C)

6
7
7
7
7
11
11
10
11
11
11
8
9
9
8
8
8
7
7
7
7
8
8
9

Dew Point (°C)

5
5
3
2
0
0
0
-0
1
2
3
3
4
4
5
5
5
6
6
7
7
8
9
8

Relative Humidity (%)

67
61
52
45
38
38
38
37
42
48
54
58
64
69
70
73
73
77
80
82
85
90
93
77

Pressure (mb)

1027
1027
1027
1027
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1028
1027
1027
1027
1027
1027
1027

Ozone (du)

316
316
315
315
315
314
314
313
312
311
310
309
308
307
307
306
306
306
306
305
305
305
305
305

Tuesday 23

Waxing Crescent 3%

No Rise

19:04

09 Bad
10 Bad
11 Bad
12 Bad
13 Bad
14 Bad
15 Bad
16 Bad
17 Bad
18 Bad
19 Bad
20 Bad
21 Bad
22 Bad
23 Bad
00 Bad
01 Bad
02 Bad
03 Bad
04 Bad
05 Bad
06 Bad

Sun - Rise: 06:50, Set: 18:55, Transit: 12:52. Moon - Rise: No Rise, Set: 19:04. Civil Dark: 19:29 - 06:16. Nautical Dark: 20:10 - 05:35. Astro Dark: 20:52 - 04:53

Total Clouds (% Sky Obscured)

54
58
67
71
72
72
73
73
77
73
68
68
67
70
78
84
87
90
95
88
84
68

Low Clouds (% Sky Obscured)

41
46
57
62
58
57
50
52
58
61
59
57
55
70
78
84
87
86
86
75
65
54

Medium Clouds (% Sky Obscured)

45
54
54
54
53
57
55
53
33
22
23
24
30
25
25
25
28
20
11
7
5
0

High Clouds (% Sky Obscured)

34
32
30
28
34
36
57
39
23
3
5
7
8
6
5
4
16
27
36
45
43
33

ISS Passover

Visibility (miles)

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

Fog (%)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Precipitation Type

None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None
None

Precipitation Probability (%)

2
7
5
1
1
1
0
6
8
5
22
34
42
38
35
34
31
26
21
22
19
21

Precipitation Amount (mm)

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0

Wind Speed/Direction (mph)

11
13
14
15
16
16
16
16
15
14
14
12
11
11
10
10
10
9
9
8
8
7

Chance of Frost

Temperature (°C)

13
14
15
15
16
16
15
15
14
14
13
13
12
11
12
12
12
13
13
13
12
12

Feels Like (°C)

9
9
10
11
11
13
13
12
12
13
13
10
11
10
11
10
9
10
10
10
11
10

Dew Point (°C)

6
5
5
5
4
4
4
4
5
6
7
7
8
8
8
8
8
8
8
8
8
8

Relative Humidity (%)

64
53
51
48
46
46
46
47
52
59
65
70
73
79
77
76
76
75
74
72
75
77

Pressure (mb)

1027
1027
1027
1027
1026
1026
1026
1025
1025
1025
1025
1026
1026
1026
1025
1025
1025
1025
1024
1024
1024
1024

Ozone (du)

304
303
303
303
303
303
302
302
302
303
303
302
302
302
301
301
300
300
300
300
300
300

Forecast for Boston, Lincolnshire, United Kingdom (52.98,-0.02)

Generated: 17/09/25 09:34:57. Forecast: 17/09/25 to 23/09/25. Timezone: UTC+1.00